Staurolite and Rutile Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Insoluble in acids
Durability
Not Available
Not Available
Specific Gravity
3.7-3.8
4.20-4.30
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Distinct on {010}
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
7-7.5
6-6.5
Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Staurolite and Rutile Chemical Formula
While comparing Staurolite and Rutile physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Staurolite and Rutile chemical formula.
- Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
- Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Staurolite and Rutile Specific Gravity
Another important criteria for qualitative analysis of gemstones is Staurolite and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Rutile Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 4.20-4.30 whereas that of Rutile is 4.20-4.30.